Convective heat transfer and thermo-diffusion effects on flow of nanofluid towards a permeable stretching sheet saturated by a porous medium

Khan, Umar; Mohyud‐Din, Syed Tauseef; Bin‐Mohsin, Bandar

doi:10.1016/j.ast.2015.12.032

Cited by 51 publications

(15 citation statements)

References 25 publications

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“…The computation time is found to be \1 second in all the cases. The system of differential equations (10)- (12) are first converted into a first-order system as below:…”

Section: Methods Of Solutionmentioning

confidence: 99%

“…Extensive theoretical and experimental researches have been made to measure the enhancement properties of nanofluid and various mechanisms have been proposed for better heat transfer processes. There is vast amount of literature available on the flows of nanofluid now [1][2][3][4][5][6][7][8][9][10][11][12]. It is assumed that the enhancement properties of the nanofluids is caused by thermal dispersion and intensified turbulence brought about by nanoparticle motion.…”

Section: Introductionmentioning

confidence: 99%

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Active and passive controls of the Williamson stagnation nanofluid flow over a stretching/shrinking surface

Halim

Sivasankaran

Noor

2016

Neural Comput & Applic

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A steady stagnation point flow of an incompressible Williamson nanofluid towards a horizontal linearly stretching/shrinking sheet with active and passive controls on the wall mass flux is numerically studied. The governing partial differential equations are reduced into a system of ordinary differential equations using a similarity transformation and are solved using the bvp4c package in MATLAB. The velocity, temperature and nanoparticle volume fraction profiles together with the reduced skin friction coefficient, reduced Nusselt number and reduced Sherwood number are graphically presented to visualize the effects of parameters involved in the study. Results show that temperature and nanoparticle volume fraction are decreasing functions of the stagnation parameter, r. It is also found that the diffusivity ratio N bt and Lewis number Le have almost negligible effects on heat transfer rate in passive control. Increasing value of Williamson parameter k will increase the skin friction in both stretching and shrinking surfaces.

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“…The computation time is found to be \1 second in all the cases. The system of differential equations (10)- (12) are first converted into a first-order system as below:…”

Section: Methods Of Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active and passive controls of the Williamson stagnation nanofluid flow over a stretching/shrinking surface

Halim

Sivasankaran

Noor

2016

Neural Comput & Applic

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“…For the power-law model, diffusion effects were elucidated by Goyal et al [29]. Umar et al [30] disclosed transportation of nano particles along with diffusion effects over a porous configuration. Hayat et al [31] adumbrated the heat transfer of Newtonian fluids over an inclined stretching cylinder.…”

Section: Literature Surveymentioning

confidence: 99%

Heat and Mass Transfer in Hydromagnetic Second-Grade Fluid Past a Porous Inclined Cylinder under the Effects of Thermal Dissipation, Diffusion and Radiative Heat Flux

et al. 2020

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Current disquisition is presented to excogitate heat and mass transfer features of second grade fluid flow generated by an inclined cylinder under the appliance of diffusion, radiative heat flux, convective and Joule heating effects. Mathematical modelling containing constitutive expressions by obliging fundamental conservation laws are constructed in the form of partial differential equations. Afterwards, transformations are implemented to convert the attained partial differential system into ordinary differential equations. An implicit finite difference method known as the Keller Box was chosen to extract the solution. The impact of the flow-controlling variables on velocity, temperature and concentration profiles are evaluated through graphical visualizations. Variations in skin friction, heat transfer and mass flux coefficients against primitive variables are manipulated through numerical data. It is inferred from the analysis that velocity of fluid increases for incrementing magnitude of viscoelastic parameter and curvature parameter whereas it reduces for Darcy parameter whereas skin friction coefficient decreases against curvature parameter. Assurance of present work is manifested by constructing comparison with previous published literature.

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“…Amhalhel et al discussed the problems related to modeling of flow and heat transfer in porous medium [32]. Boundary layer flow of a permeable surface immersed in a porous medium regarding nanofluid was examined by Umar et al [33]. Raju et al [34] studied MHD flow of nanofluid over moving vertical plate in porous material under Soret and radiation impacts.…”

Section: Introductionmentioning

confidence: 99%

Unsteady Radiative Natural Convective MHD Nanofluid Flow Past a Porous Moving Vertical Plate with Heat Source/Sink

et al. 2020

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In this research article, we investigated a comprehensive analysis of time-dependent free convection electrically and thermally conducted water-based nanofluid flow containing Copper and Titanium oxide (Cu and TiO 2 ) past a moving porous vertical plate. A uniform transverse magnetic field is imposed perpendicular to the flow direction. Thermal radiation and heat sink terms are included in the energy equation. The governing equations of this flow consist of partial differential equations along with some initial and boundary conditions. The solution method of these flow interpreting equations comprised of two parts. Firstly, principal equations of flow are symmetrically transformed to a set of nonlinear coupled dimensionless partial differential equations using convenient dimensionless parameters. Secondly, the Laplace transformation technique is applied to those non-dimensional equations to get the close form exact solutions. The control of momentum and heat profile with respect to different associated parameters is analyzed thoroughly with the help of graphs. Fluid accelerates with increasing Grashof number (Gr) and porosity parameter (K), while increasing values of heat sink parameter (Q) and Prandtl number (Pr) drop the thermal profile. Moreover, velocity and thermal profile comparison for Cu and TiO 2 -based nanofluids is graphed.

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Convective heat transfer and thermo-diffusion effects on flow of nanofluid towards a permeable stretching sheet saturated by a porous medium

Cited by 51 publications

References 25 publications

Active and passive controls of the Williamson stagnation nanofluid flow over a stretching/shrinking surface

Active and passive controls of the Williamson stagnation nanofluid flow over a stretching/shrinking surface

Heat and Mass Transfer in Hydromagnetic Second-Grade Fluid Past a Porous Inclined Cylinder under the Effects of Thermal Dissipation, Diffusion and Radiative Heat Flux

Unsteady Radiative Natural Convective MHD Nanofluid Flow Past a Porous Moving Vertical Plate with Heat Source/Sink

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